Patent GB-1033850-A (GB)
Title: Machine for forming glassware
Inventor: ZAPPIA ANTHONY T
IPC: C03B9/193
Filed: 1964-12-28
Abstract: In a machine for the production of "press-blown" glass hollow-ware there is provided a pair of arms 47, 53 (Fig. 2, not shown), mounted for reciprocation and arcuate oscillation about individual spaced axes, a finishing ring 48, 54 carried by each arm, a single blow mould 26 equidistantly spaced radially from said individual axes, two parison moulds 36, 38 each spaced radially from one only of said axes by a distance equal to the distance between said blow mould 26 and each of said axes both parison moulds 36, 38 being mounted for oscillatory movement so that first one is placed in registry with a charging station 70 and the other in registry with a pressing station and then said other in register with said charging station whilst said one is in register with another pressing station, and means for driving said arms such that when either of said finish rings registers with said blow mould the other of said finish rings registers with its respective parison mould.  The parison moulds are mounted upon a table 21 driven by a motor 24 (Fig. 1 not shown). A charge of glass is fed via shoot 25 into the parison mould 38.  The table 21 is then rotated until mould 38 is in register with a pressing station 69 and parison mould 36 is at the charging station 70.  On reaching the pressing station 69 a notch in a platform 37 forming the base of parison mould 38 engages the head 34 (Fig. 8, not shown), of a piston-rod 33.  The piston-rod is actuated to lift the parison mould 38 into sealing engagement with the finishing ring 54 attached to arm 53.  A plunger 62 is then activated to pass through the ring 54 into the parison mould 38 and to press the glass charge therein into a parison 115.  The plunger 62 is then retracted and the piston-rod 33, with parison mould 38, lowered leaving the parison 115 suspended from its finishing ring 54. During this time a charge of glass has been delivered to parison mould 36.  The table 21 is then turned back so that parison mould 38 returns to the charging station 70 and parison mould 36 registers with its pressing station 68 for moving into engagement with its finish ring 48. Simultaneously a motor 55 operate to swing the arm 53 and ring 54 with parison 115 into position above the open blow mould 26, whereupon the parison is lowered the blow mould closed and the finish ring opened.  The finish ring 54 is then raised and returned to above position 69.  A blow head 107 is then moved into engagement with the parison and the article blown out.  Meanwhile the plunger carriage 59 has been moved, on horizontal guides through the medium of a motor 63 operating levers 65-67, from pressing station 69 to pressing station 68 where parison mould 36 is raised into engagement with finish ring 48.  The plunger 62 is then moved down to press a parison in mould 36.  And thus the cycle repeats.  As the blow mould 26 opens a take-out mechanism 113 is activated to remove the blown article.  Any suitable timing mechanism may be used to operate the machine. The finish rings have opening and closing means.  A block 71 at the end of arm 53 terminates at each end in a reduced extension 72. An element 731 with a reverse flange 73 is snugly slidably sleeved over extension 72 and is also attached to a piston 74.  A threaded cap 75 is secured to the end of extension 72 and serves to confine a coil spring 77.  An air supply passage 81 leads into block 71 one branch leading to piston 74 carrying one half of the finish ring and another branch leading to an identical piston 79 carrying the other half of the finish ring.  When air under pressure is supplied to the pistons they move outwardly to open the ring, and when they are exhausted the ring is closed.